English

AGN Neutrino flux estimates for a realistic hybrid model

High Energy Astrophysical Phenomena 2018-04-04 v1

Abstract

Recent reports of possible correlations between high energy neutrinos observed by IceCube and Active Galactic Nuclei (AGN) activity sparked a burst of publications that attempt to predict the neutrino flux of these sources. However, often rather crude estimates are used to derive the neutrino rate from the observed photon spectra. In this work neutrino fluxes were computed in a wide parameter space. The starting point of the model was a representation of the full spectral energy density (SED) of \textit{3C 279}. The time-dependent hybrid model that was used for this study takes into account the full pγp\gamma reaction chain as well as proton synchrotron, electron-positron-pair cascades and the full SSC scheme. We compare our results to estimates frequently used in the literature. This allows to identify regions in the parameter space for which such estimates are still valid and those in which they can produce significant errors. Furthermore, if estimates for the Doppler factor, magnetic field, proton and electron densities of a source exist, the expected IceCube detection rate is readily available.

Keywords

Cite

@article{arxiv.1802.08820,
  title  = {AGN Neutrino flux estimates for a realistic hybrid model},
  author = {S. Richter and F. Spanier},
  journal= {arXiv preprint arXiv:1802.08820},
  year   = {2018}
}

Comments

12 pages, 8 figures, accepted for publication in Astroparticle Physics